Features: Made of high quality stainless steel, good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and the excellent of oxidation resistance, which can ensure long time using and prolong screws lifespan. Studs are available for clamping onto screw or canvas studs for mounting on hard surfaces. The snaps with heavy-duty construction assures a firm grip that will remain secure through years of use all stainless parts. Can be attached to wood, plastics and fiberglass, great for both indoor and outdoor use, with excellent rust resistance in salt water applications. Specification: Color: Silver Material: Copper+Stainless Steel Button cap diamter: app. 15mm(0.59in) Quantity: 10 sets Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 10 pcs x Snap Fastener Sockets 10 pcs x Pressure Gripper Buttons 10 pcs x Pressure Fastener Self-Tapping Screw Stud (other accessories demo in the picture is not included.)